ldi_aread(9F) Kernel Functions for Drivers ldi_aread(9F)NAME
ldi_aread, ldi_awrite - Issue an asynchronous read or write request to
a device
SYNOPSIS
#include <sys/sunldi.h>
int ldi_aread(ldi_handle_t lh, struct aio_req *aio_reqp, cred_t *cr);
int ldi_awrite(ldi_handle_t lh, struct aio_req *aio_reqp, cred_t *cr);
PARAMETERS
lh Layered handle.
cr Pointer to a credential structure.
aio_reqp Pointer to the aio_req(9S) structure that describes where
the data is to be stored or obtained from.
DESCRIPTION
The ldi_awrite() function passes an asynchronous write request to a
device entry point specified by the layered handle. This operation is
supported for block and character devices.
The ldi_aread() function passes an asynchronous read request to a
device entry point specified by the layered handle. This operation is
supported for block and character devices.
RETURN VALUES
The ldi_awrite() and ldi_aread() functions return 0 upon success. If a
failure occurs before the request is passed on to the device, the pos‐
sible return values are shown below. Otherwise any other error number
may be returned by the device.
EINVAL Invalid input parameters.
ENOTSUP Operation is not supported for this device.
CONTEXT
These functions may be called from user context.
SunOS 5.11 3 June 2003 ldi_aread(9F)
